citizen. noun citÂ·iÂ·zen \Ësi-tÉ-zÉn also-sÉn\. Tweet. : a person who legally belongs to a country and has the rights and protection of that country. : a person who lives in a particular place.itizen is preferred for one owing allegiance to a state in which sovereign power is retained by the people and sharing in the political rights of those people. subject implies allegiance to a personal sovereign such as a monarch.
1 The chance that treatment with ursodeoxycholic acid during pregnancy will cause fetal harm is remote but possible.  Medications used to treat PBC itself include most commonly ursodeoxycholic acid (UDCA), rarely colchicine (Colcrys), and sometimes certain immunosuppressive medications, such as corticosteroids. The UDCA is the most effective and safe treatment.
PBC is believed to be an autoimmune disease. This is a disease where the body attacks itself. In this case, your bodyâs defence against germs and infections â the immune system â mistakes the cells lining the bile ducts as âforeignâ and attacks them.